Hi,

I want to disable automatic calibration of DC offset and IQ imbalance in
USRP Source block.

I am aware that I need to pass bool value 'false' as the argument to
*set_auto_dc_offset* and *set_auto_iq_balance*. The USRP Source block
itself provide this facility in the tab *FE Corrections*. However, it does
not seem to work. By providing 0 (boolean false) value in Enable DC Offset
Correction and Enable IQ Imbalance Correction do not disable the automation
DC offset and IQ Imbalance correction. I tested this with USRP N210 by
simply using USRP Source block centered at frequency 915MHz connected with
WX GUI FFT Sink. The spectrum plot does not show any changes in both cases.

If I want to force these changes in the UHD code (usrp_source_impl.cc and
usrp_source_impl.h), what changes do I need to make?


Thanks,
Kunal
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